Hi Experts, need help on Creating Expense report sheet. While I am creating new expense report sheet

When i create New Expense report Sheet in PS 9.1 , through Navigation- travel & Expense Center -> Expense Report -> Create, I am adding attachment at line1 and clicking on 'Save For Later' . I get newly systen generated sheet ID. Now when I re-navigate to this sheet ID using same Navigation and try to search this sheet id I receiver error-

No matching buffer found for level. (15,26)

When retrieving data for a page, a data value was retrieved for which there was no matching data value at a higher level scroll entry.  (For example, at scroll level 2, a value of ABC was read in and scroll level 1 contained this higher level field but did not have a row with a key value of ABC.)  This usually occurs because of an error in a database record or view; or because of improper deletion of values in a database.  Correct the page definition or contact your system administrator.